# SDR AALA202107228308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2021
- Submitted: July 22, 2021
- Operation: Air carrier
- Aircraft: [N752AN](https://openairdocs.org/aircraft/N752AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30260
- Aircraft time: 76,256 hours, 9,636 cycles
- System (JASC): [2397 · Communications System Wiring](https://openairdocs.org/jasc/2397)
- Part: Coupler
- Part number: 5242500102
- Condition: Faulty
- Location: Zone 100
- Stage of operation: CR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202107228308

## Discrepancy

AIRCRAFT WAS GROUNDED: STATUS MESSAGE FOR ELECTRICAL STANDBY SYSTEM, FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED DIODE (AALA202107227532) WITH NEW IAW WDM 24-09-26 AND ARINC 629 COUPLER IAW AMM 23-91-01, OPS CHECK GOOD.

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